#include<stdio.h>
static int a = 3;
static int b;

void f(void){
    int c;
    ++a;++b;++c;
    printf("a=%d\n",a);
    printf("b=%d\n",b);
    printf("c=%d\n",c);
}

int main(void){
    f();
    f();
    f();
}
